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#11
12.10.2011, 20:56
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Цитата из Surawicz et al. Standardization and Interpretation of the ECG, Part III JACC Vol. 53, No. 11, 2009:976–81
Ventricular Preexcitation of Wolff-Parkinson-White Type Whether preexcitation is full or not cannot be determined from the body surface ECG, but the following criteria are suggestive of full preexcitation: 1. PR interval (assuming no intra-atrial or interatrial conduction block) less than 120 ms during sinus rhythm in adults and less than 90 ms in children. 2. Slurring of initial portion of the QRS complex (delta wave), which either interrupts the P wave or arises immediately after its termination. 3. QRS duration greater than 120 ms in adults and greater than 90 ms in children. 4. Secondary ST and T wave changes. Terms Not Recommended The term Mahaim-type preexcitation is not recommended because the diagnosis cannot be made with certainty on the basis of the surface ECG. The terms atypical LBBB, bilateral bundle-branch block, bifascicular block, and trifascicular block are not recommended because of the great variation in anatomy and pathology producing such patterns. The committee recommends that each conduction defect be described separately in terms of the structure or structures involved instead of as bifascicular, trifascicular, or multifascicular block. The term Brugada pattern to describe a pattern that simulates incomplete RBBB in lead V1 with ST-segment changes is not recommended for incorporation into automated interpretative algorithms because there are 3 different types of ST-segment changes (15,16) and because the pattern is not specific for the Brugada syndrome. The use of this term should be left to the discretion of the overreader. The term left septal fascicular block is not recommended because of the lack of universally accepted criteria. 
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